《高层民用建筑设计防火规范》GB50 0 4 5— 95,1999年局部修订条文于 99年 5月 1日施行以来 ,各种特级防火卷帘应运而生。主要是在一些公共建筑物中 (如商场、展览厅等 )设置防火墙有困难的场所 ,可采用防火卷帘作防火分区分隔 ;如果是不以背火面温升为判定条件 ,耐火极限不低 “Fire Code for Design of High-rise Civil Buildings” GB50 0 4 5-95, 1999 Amendments to local regulations Since its implementation on May 1, 1999, all kinds of fireproof roller blinds have emerged. Mainly in some public buildings (such as shopping malls, exhibition halls, etc.) set up a firewall where there are difficulties, fire shutter can be used for fire partition; If it is not to the back surface temperature rise to determine the conditions, the fire resistance is not low